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Engine-Codes – Generic – U250C

U250C Code - Invalid Data Received From Active Safety Control Module 2 On Chassis Expansion CAN Bus

Quick Answer

The diagnostic trouble code U250C indicates that invalid data has been received from the Active Safety Control Module 2 on the Chassis Expansion CAN Bus. Common causes include Loose or corroded wiring connections in the CAN Bus network, Malfunctioning Active Safety Control Module 2, Software glitches or communication errors within the control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
U250C indicates Invalid Data Received From Active Safety Control Module 2 On Chassis Expansion CAN Bus.
Common causes
Common causes include Loose or corroded wiring connections in the CAN Bus network, Malfunctioning Active Safety Control Module 2, Software glitches or communication errors within the control module.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code U250C Description

The diagnostic trouble code U250C indicates that invalid data has been received from the Active Safety Control Module 2 on the Chassis Expansion CAN Bus. The Chassis Expansion CAN Bus is a network within the vehicle that allows various control modules to communicate with each other. The Active Safety Control Module 2 is responsible for managing safety features such as traction control, stability control, and anti-lock braking systems. When the vehicle's onboard computer detects that the data being received from this module is invalid, it triggers the U250C code.

OBDII Code U250C - Invalid Data Received From Active Safety Control Module 2 On Chassis Expansion CAN Bus
U250C Code - Invalid Data Received From Active Safety Control Module 2 On Chassis Expansion CAN Bus

Common Causes of U250C

  1. Loose or corroded wiring connections in the CAN Bus network.
  2. Malfunctioning Active Safety Control Module 2.
  3. Software glitches or communication errors within the control module.
  4. Electrical interference from aftermarket accessories or modifications.
  5. Water intrusion or physical damage to the control module or wiring harness.

Symptoms of U250C

  1. Illumination of the ABS, traction control, or stability control warning lights on the dashboard.
  2. Loss of traction control or stability control functionality.
  3. Erratic or unresponsive braking behavior.
  4. Inconsistent or unpredictable handling characteristics.
  5. Difficulty shifting gears in vehicles equipped with automatic transmissions.

How to Fix U250C

  1. Use a diagnostic scan tool to retrieve and record the specific fault codes present in the vehicle's system.
  2. Inspect the wiring connections and harnesses in the Chassis Expansion CAN Bus network for any signs of damage, corrosion, or loose connections.
  3. Test the Active Safety Control Module 2 to determine if it is functioning properly and communicating accurate data.
  4. Perform any necessary software updates or reprogramming to correct communication errors or glitches.
  5. Replace any damaged components, repair wiring issues, and clear the fault codes to reset the system.

Cost to Fix U250C

The cost of repairing a U250C code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, the repair costs for this type of problem may range from $200 to $600, including parts and labor. However, it is important to note that diagnosis time and labor rates can vary significantly based on factors such as location, vehicle make and model, and the expertise of the technician. It is advisable to consult with a qualified mechanic or repair shop to get an accurate estimate for addressing the U250C code in your vehicle.

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Code U250C Information for Specific Makes

  • U250C Buick — Invalid Data Received From Active Safety Control Module 2 On Chassis Expansion CAN Bus
  • U250C Cadillac — Invalid Data Received From Active Safety Control Module 2 On Chassis Expansion CAN Bus
  • U250C Chevrolet — Invalid Data Received From Active Safety Control Module 2 On Chassis Expansion CAN Bus
  • U250C GMC — Invalid Data Received From Active Safety Control Module 2 On Chassis Expansion CAN Bus
About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U250C Code

1. What are common symptoms of OBDII code U250C?

Symptoms may include warning lights on the dashboard, loss of communication with active safety systems, and potential issues with vehicle stability control.

2. What can cause the OBDII code U250C to trigger?

The code U250C is typically triggered by a communication error between the active safety control module 2 and the chassis expansion CAN bus.

3. How can I diagnose the cause of the U250C code?

Diagnosis involves checking the wiring and connections between the active safety control module 2 and the chassis expansion CAN bus. It may also require scanning the vehicle's network for other communication faults.

4. Is it safe to drive with the U250C code present?

It is generally not recommended to drive with the U250C code active, as it may affect the proper functioning of critical safety systems in the vehicle.

5. Can a DIYer repair the U250C code issue?

Repairing the U250C code may require advanced diagnostic tools and knowledge of automotive electronics. It is recommended to consult a professional mechanic for proper diagnosis and repair.

6. How much does it cost to fix the U250C code?

The cost of fixing the U250C code can vary depending on the underlying cause. It may involve replacing faulty components, repairing wiring issues, or reprogramming control modules.

7. Are there any preventive measures to avoid the U250C code?

Regular maintenance of the vehicle's electrical systems, including checking for loose connections and damaged wiring, can help prevent issues that may trigger the U250C code.

8. Can the U250C code be intermittent?

Yes, the U250C code can sometimes be intermittent, especially if the communication error between the active safety control module 2 and the chassis expansion CAN bus is sporadic.

9. Will resetting the code make it go away permanently?

Resetting the code may temporarily clear the fault, but if the underlying issue causing the U250C code is not addressed, it is likely to reappear.

10. How long does it take to repair the U250C code?

The repair time for the U250C code can vary depending on the specific cause and complexity of the issue. It is advisable to consult a professional technician for an accurate estimate.

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